CN106706507A - Method for testing ultraviolet aging performance of bituminous mixture - Google Patents
Method for testing ultraviolet aging performance of bituminous mixture Download PDFInfo
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- 230000032683 aging Effects 0.000 title claims abstract description 76
- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000000203 mixture Substances 0.000 title abstract description 20
- 239000010426 asphalt Substances 0.000 claims abstract description 67
- 238000011068 loading method Methods 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000011056 performance test Methods 0.000 claims abstract description 17
- 230000005855 radiation Effects 0.000 claims abstract description 7
- 239000011888 foil Substances 0.000 claims description 13
- 238000005227 gel permeation chromatography Methods 0.000 claims description 2
- 238000002329 infrared spectrum Methods 0.000 claims description 2
- 238000002411 thermogravimetry Methods 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 description 18
- 150000001875 compounds Chemical class 0.000 description 17
- 238000004458 analytical method Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
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- 244000131316 Panax pseudoginseng Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 102100027773 Pulmonary surfactant-associated protein A2 Human genes 0.000 description 1
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- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
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- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/004—Investigating resistance of materials to the weather, to corrosion, or to light to light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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Abstract
The invention relates to a method for testing the ultraviolet aging performance of bituminous mixture. The method comprises the following steps: (1) preparing a bituminous mixture specimen according to actual requirement, dividing the specimen into two parts in the longitudinal direction to form testing mixture and a contrast blanking material; (2) putting the testing mixture under ultraviolet ray to accept light aging, putting the contrast blanking material in a shading place, and adjusting the surface temperatures of the two specimens; (3) adhering strain gauge to the surfaces of the testing mixture and contrast blanking material after the light aging is completed, standing, splicing the two specimens, putting on MMLS3 accelerated loading equipment to accept dynamic loading, and carrying out a pavement performance test; and (4) excavating the testing mixture and the contrast blanking material to pick cores after the pavement performance test is completed, and carrying out a microscopic test. Compared with the prior art, the method has the advantages that the changing situation of pavement performance of an actual asphalt pavement under traffic load and ultraviolet radiation can be well simulated, and the light aging regulation of the asphalt pavement is comprehensively disclosed.
Description
Technical field
The present invention relates to highway and urban road field, and in particular to a kind of asphalt ultraviolet light and aging performance test
Method.
Background technology
When bituminous paving, ultraviolet therein can directly affect top layer pitch to outdoor direct irradiation of sunlight.Pitch point
The diffusion of son and road surface space or destruction crackle/crack etc. can make the influence of ultraviolet diffuse to the deeper part in road surface,
Reach below top layer in the range of 1cm；And asphalt from asphalt mixture film thickness is generally 5~15 μm, so ultraviolet radiation pair
Bituminous paving can produce considerable influence.Harbin Institute of Technology, Tongji University, Wuhan University of Technology, Xi'an building technology
The colleges and universities such as university have successively carried out more research to pitch ultraviolet light and aging, develop manual simulation's ultraviolet light Acceleration study equipment
And carried out related experiment.But in terms of pitch and asphalt ultraviolet light and aging, there is no unified testing regulations to be available for ginseng
Examine.Testing equipment, test method, experimental condition between each research unit and personnel etc. are (especially when ultraviolet lighting intensity, illumination
Between, asphalt filmthickness etc.) there is bigger difference so that result of the test is not quite similar, or even conversely, comparativity and the property used for reference each other
It is poor.In addition, mainly considering mechanical property when asphalt and Asphalt Pavement Structure Design is carried out at present, not yet consider
Ultraviolet lighting is crossed to the performance reduction caused by material, structure, and in fact, in high-strength ultraviolet area, ultraviolet is to pitch
Road surface is an inevitable, very important influence factor.
On the other hand, the pavement performance for bituminous paving is tested, because the long-term observation to actual operation road takes
Effort, therefore typically carried out by indoor wheel tracking test, indirect tensile test on frozen-thaw etc., but such traditional laboratory test, due to examination
Part size, loading mode, environmental condition etc. are different from stress of the real road under traffic load, it is more difficult to truly reflect road force
Learn the process that performance is gradually degraded.
The content of the invention
The purpose of the present invention is exactly to provide that a kind of test function is more, mould for the defect for overcoming above-mentioned prior art to exist
The method for intending the correct asphalt ultraviolet light and aging performance test of result.
The purpose of the present invention can be achieved through the following technical solutions：A kind of asphalt ultraviolet light and aging performance is surveyed
The method of examination, including following steps：
(1) according to the actual requirements, asphalt sample is prepared, and it is divided into two on longitudinal length, formed and surveyed
Examination compound and control blank material；
(2) test mixing material is placed and receives light aging under ultraviolet light, the shading of control blank material is placed, adjust two groups
The surface temperature of sample；
(3) after light aging terminates, in test mixing material and the surface mount foil gauge of control blank material, by two after standing
Individual sample splicing, is placed in MMLS3 accelerated loading equipment and receives dynamic load, carries out pavement performance test；
(4) after pavement performance is completed, test mixing material and control blank material are excavated into coring, carries out microcosmic examination
Test.
When described test mixing material carries out light aging, the radiation shapes of ultraviolet light are banding, and test mixing material is vertical
Overlapped with ultraviolet radiation center band to center.
The described light aging time is 300~500h.
The temperature during light aging is less than or equal to 60 DEG C.
Can just be loaded after standing at least 24h after stickup foil gauge.
The pavement performance test includes rut test, strain testing or seismic wave modulus test, sample both sides and top
Need to be fixed, it is ensured that asphalt sample will not be moved in tire loading procedure.
Before carrying out dynamic load, need to be pre-processed, the pretreatment is comprised the following steps：Sample is fixed on MMLS3
In the loading experimental tank of accelerated loading equipment, foil gauge is connected into data wire, divide horizontal rut collection section, carry out mark；Really
Determine seismic wave modulus measuring point, carry out mark；Then the precompressed of 2~5min is carried out.Determine the tire pressure of accelerated loading equipment, room
Interior temperature；The parameters such as setting loading speed, loading number of times, data acquiring frequency.Setting value is respectively reached in accumulation loading number of times
When, pause loading carries out the measure of rutting deformation and seismic wave modulus；In loading procedure, whole process carries out adopting for dynamic strain
Collection.
The microscopic test includes infrared spectrum, thermogravimetric analysis, gel chromatography.
Comprehensive pitch and asphalt physical property (structure type, voidage etc.), test temperature, ultraviolet irradiation are by force
Core sample result, pitch after degree, ultraviolet exposure time, accelerated loading pavement performance (rut, strain, seismic wave modulus), loading
Microscopic test result etc., carries out asphalt anti-ultraviolet aging performance comparison, evaluation analysis；And can be to by operation asphalt road
The asphalt sample cut out in face carries out indoor accelerating and loading test, analyzes its pavement performance.
Compared with prior art, beneficial effects of the present invention are embodied in：Can the preferably actual bituminous paving of simulation in traffic
The situation of change of load and the lower pavement performance of ultraviolet irradiation, discloses its light aging rule comprehensively, and this method of testing is reasonable in design,
It is full and accurate specific.
Specific embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed implementation method and specific operating process, but protection scope of the present invention is not limited to following implementations
Example.
Embodiment 1
(1), asphalt shaping and ultraviolet light and aging experiment
On the premise of the detection such as pitch, material property, the Mixture Ratio such as gather materials meets the requirements, using Slab
The many size vibration rolling instrument forming machines of compactor, difference disposal molding matrix pitch SMA-13 compounds, rubber asphalt
SMA-13 compound samples.Specimen size is 50cm × 30cm × 10cm (length × width × height), and forming temperature is 175 DEG C.Wait to drip
After the blue or green compound sample demoulding, sample is divided into two along its length using cutting machine, 1/2 sample therein is put to banding
Receive light aging under ultraviolet light source, 1/2 other sample shading is put to normal temperature as non-ultraviolet light and aging contrast groups.
1/2 sample is put as ultraviolet source lower section, its longitudinal center overlaps with ultraviolet radiation center band.Sample longitudinal direction
Ultraviolet lighting intensity is up to 400W/m on center band2, both sides intensity of illumination with deviate longitudinal center band distance, according to secondary multinomial
Formula pattern is successively decreased.300h, 500h are set to respectively to matrix, rubber-asphalt mixture sample ultraviolet light and aging irradiation time.Sample
Centre of surface maximum temperature is no more than 60 DEG C.
(2), asphalt accelerating and loading test
Asphalt sample carries out the pavement performance survey of rut, strain, seismic wave modulus in accelerating and loading test
It is fixed.
It is up to the asphalt sample and unaged asphalt of ultraviolet light and aging time completion ultraviolet light and aging
Sample is taken out, and specifies measuring point to paste foil gauge at positions such as sample upper and lower surface, sides, mixes with to the pitch in loading procedure
36h is loaded after material carries out strain real-time testing, and stickup foil gauge.
Strain point layout：In asphalt specimen surface, bottom surface, side gridding line, wherein vertical line is each face
Longitudinal centre line, x wire is every 5cm mono-.In specimen surface, bottom surface, two top 10cm of samples splicing of distance,
At 25cm, 2 foil gauges of a vertical and one horizontal are arranged, and surface, bottom surface foil gauge correspond；In the single side of sample, distance
At top 10cm, 25cm that two samples connect, arrange that one vertical one erects 2 foil gauges.
Rut section is arranged：In order to all-sidedly and accurately obtain the Changing Pattern of rut in loading procedure, in non-light aging drip
3 horizontal sections are chosen on blue or green compound sample and test section as rut, its distance splicing top be respectively 5cm, 20cm,
35cm；5 horizontal sections are chosen on light aging asphalt sample and tests section as rut, its distance splicing top point
Wei not 5cm, 15cm, 26cm, 35cm, 45cm.
Seismic wave modulus point layout：Rut transverse test section is as seismic wave with the intersection point of surface longitudinal center line
The test point position of modulus.
Load test is divided to the matrix, two groups of rubber-asphalt mixture sample to carry out.During every group of experiment, 1/2 examination of non-light aging
Closely splicing is positioned in loading experimental tank that (i.e. every group loading cross dimensions is 100cm × 15cm for sample and the sample of light aging 1/2 longitudinal direction
× 10cm (length × width × height)), while receive dynamic load, to carry out the contrast that light aging influences on SMA-13 asphalts
Analysis.
Sample both sides and top need to be fixed, it is ensured that asphalt sample will not be moved in tire loading procedure
It is dynamic.After sample is fixed, each data wire is connected；Mark rut collection section, seismic wave modulus measuring point.Above Job readiness is finished
About 2min precompressed at a slow speed is carried out using accelerated loading equipment to asphalt sample afterwards.Next, being carried out to asphalt
Initial parameter is gathered, including section rut, strain, seismic wave modulus etc..
Load test is carried out using 1/3rd small size accelerated loading equipment MMLS3., using four groups of pneumatic tires
(Φ 300mm, 80mm wide), inflation pressure is 0.7MPa.In load test, in order to ensure the stability of load test, early stage is adopted
With the loading speed of 3600 times/h, then using the loading speed of 6000 times/h.Load test does not consider transverse shifting.Matrix,
Each accumulation loading number of times 500,000 times under the conditions of natural temperature of rubber asphalt sample, specimen surface temperature is about 33 DEG C during loading.
Consider the factors such as specimen size, range accuracy, loading disturbance, measured using foil resistance foil gauge BX120-30AA
Horizontal vertical, horizontal strain and lateral longitudinal, vertical strain, carry out dynamic strain data and adopt using DHDAS signal testings analysis system
Collection；In loading procedure, whole process carries out strain data collection, frequency acquisition 100Hz.Using profiler MLS Profilometer
Driver-P900 carries out rutting deformation collection；Seismic wave modulus collection is carried out using removably seismic wave modulus instrument PSPA.Adding
During load, whole process carries out the collection of dynamic strain.Designated value (matrix is reached in accumulation loading number of times：00000 times, 10,000 times, 20,000
It is secondary, 40,000 times, 60,000 times, 100,000 times, 200,000 times, 300,000 times, 400,000 times, 500,000 times；Rubber：00000 times, 10,000 times, 40,000 times, 100,000
It is secondary, 200,000 times, 300,000 times, 500,000 times) when pause loading, carry out rutting deformation and seismic wave modulus measurements.
(3), interpretation of result
1. rutting deformation
The cross measure length of rutting deformation section is 130mm, and rutting deformation is gathered every 2mm.Not load (00,000 times)
When section primitive curve as this section rutting deformation amount calculating benchmark, higher than datum line part for protuberance deform, relatively
Deflection is with the occasion of representing；Correspondingly, the part less than datum line is depressed deformation, is represented with negative value；Sectional curve peak
With the algebraic step of minimum point deflection as rutting depth.All section rutting depths in matrix and rubber-asphalt mixture sample
Average value with loading number of times situation of change it is as shown in table 1.
The asphalt sample mean rutting depth (unit of table 1：mm)
Under MMLS3 loading effects, the asphalt sample mean rutting depth after light aging is more than not to be carried out accordingly
The asphalt sample of light aging, both gaps are gradually reduced after loading number of times is more than 100,000 times；Rubber-asphalt mixture
The average rutting depth of sample is less than matrix pitch compound, and both gaps increase with the increase of loading number of times, and rubber
Asphalt rutting depth gap under the conditions of light aging and non-light aging is less than matrix pitch compound analog value.By returning
Analysis understands that asphalt sample mean rutting depth is presented preferable power function relationship (R with loading number of times2>0.97).Examination
Test result to show, ultraviolet light and aging exacerbates the reduction of stability at high temperature of asphalt mixture energy, and ultraviolet light and aging is to rubber asphalt
The influence of compound is much smaller than matrix pitch.
2. dynamic strain
During accelerated loading, dynamic strain data acquisition is carried out with frequency 100Hz incessantly, to obtain controllable lotus
Carrier strip part surface, bottom surface longitudinally, laterally strain and side longitudinal direction, the spatial distribution of vertical strain-responsive, the development of changing course
Rule.Understand, light aging is smaller on bottom surface strain influence, and the surface strain of light aging asphalt sample is more than unaged
Under the conditions of analog value, and as loading number of times increasing, surface strain gap multiple between light aging and non-light aging is in subtracting
Small trend, influence of the light aging to asphalt mechanical response is gradually reduced.It is being loaded onto during 500,000 times, light aging
Matrix pitch compound specimen surface longitudinal strain be 1.00~1.20 times of unaged analog value, surface transverse strain the former
Be 0.89~1.17 times of the latter, it is 1.29~3.71 times of the latter that side vertically strains the former, side longitudinal strain the former be
The 0.60~0.78 of the latter.
The bottom surface longitudinal strain of rubber asphalt is less than 250 μ ε, and bottom surface transverse strain and side longitudinal strain are less than 100 μ ε,
The bottom surface strain of light aging and unaged asphalt sample and side longitudinal direction strain differential are not little (ratio is 1.00 or so),
So main contrast's surface strain herein and side vertically strain.It is unaged phase that rubber asphalt side vertically strains after light aging
2~3 times for should being worth；Surface longitudinal strains 1.07~1.25 times that the former is the latter；Surface transverse strain the former for the latter
1.01~1.37 times.
In summary, light aging is vertically strained to the surface strain of asphalt sample and side and produces larger shadow
Ring, light aging makes surface strain highest increase 30%, side is vertically strained highest increase 200%, it is old that this has also confirmed light
The larger result of asphalt sample rutting deformation after change.
3. seismic wave modulus
Initially seismic wave modulus gap of the matrix pitch compound sample of light aging and non-light aging when not loading compared with
It is small, but as loading is carried out, the seismic wave modulus rapid decay of the matrix pitch compound sample after light aging, less than non-light
Aging rear sample, to loading 500,000 times, does not carry out the matrix pitch compound sample seismic wave modulus reduction of light aging about extremely
The 80% of its initial modulus, and the matrix pitch compound sample analog value reduction after light aging is about to its initial modulus
65%.This also discloses light aging so that the reason for stability at high temperature of asphalt mixture is reduced from another point of view.
Rubber asphalt seismic wave modulus decays with loading number of times in good quadratic polynomial form.Compared to matrix pitch
Compound sample, the seismic wave modulus of rubber-asphalt mixture sample is smaller.The rubber asphalt mixing of light aging and non-light aging
Initially seismic wave modulus gap of the material sample when not loading is smaller, but as loading is carried out, the rubber asphalt after light aging
The seismic wave modulus rate of decay of compound sample is more than sample after non-light aging：Light aging rubber-asphalt mixture initial stage earthquake
Ripple modulus rate of decay is about 2 times of non-light aging, and follow-up the former is slightly larger than the latter.After loading 500,000 times, do not carry out light aging,
Light aging rubber-asphalt mixture sample seismic wave modulus reduction about to its each initial modulus 75%, 70%.In loading
Later stage, because temperature drop makes seismic wave modulus slightly increase occur.
In summary understand, rubber-asphalt mixture properties are better than matrix pitch compound, and performance degradation degree
Less than matrix pitch compound, then the modifying function of rubber powder reduces the influence of ultraviolet light and aging to a certain extent.Matrix
Macroscopically shown as after light aging with rubber-asphalt mixture sample：Larger rutting deformation is produced under wheel load effect
And dynamic strain, seismic wave modulus rate of decay is faster.Therefore, ultraviolet light and aging exacerbates the performance degradation of asphalt,
The service life of bituminous paving will be shortened.
Claims (8)
1. a kind of method of asphalt ultraviolet light and aging performance test, it is characterised in that methods described includes following
Step：
(1) according to the actual requirements, asphalt sample is prepared, and it is divided into two on longitudinal length, form test mixed
Close material and control blank material；
(2) test mixing material is placed and receives light aging under ultraviolet light, the shading of control blank material is placed, adjust two groups of samples
Surface temperature；
(3) after light aging terminates, in test mixing material and the surface mount foil gauge of control blank material, by two examinations after standing
Sample splices, and is placed in MMLS3 accelerated loading equipment and receives dynamic load, carries out pavement performance test；
(4) after pavement performance is completed, test mixing material and control blank material are excavated into coring, carries out microscopic test.
2. a kind of method of asphalt ultraviolet light and aging performance test according to claim 1, it is characterised in that institute
When the test mixing material stated carries out light aging, the radiation shapes of ultraviolet light are banding, and the longitudinal center of test mixing material with it is purple
Outer light radiation center band overlaps.
3. a kind of method of asphalt ultraviolet light and aging performance test according to claim 1, it is characterised in that institute
The light aging time stated is 300~500h.
4. a kind of method of asphalt ultraviolet light and aging performance test according to claim 1, it is characterised in that institute
Temperature when stating light aging is less than or equal to 60 DEG C.
5. the method for a kind of asphalt ultraviolet light and aging performance test according to claim 1, it is characterised in that viscous
Can just be loaded after standing at least 24h after patch foil gauge.
6. a kind of method of asphalt ultraviolet light and aging performance test according to claim 1, it is characterised in that institute
Stating pavement performance test includes rut test, strain testing or seismic wave modulus test.
7. the method for a kind of asphalt ultraviolet light and aging performance test according to claim 6, it is characterised in that enter
Before Mobile state loading, need to be pre-processed, the pretreatment is comprised the following steps：Sample is fixed on into MMLS3 accelerated loadings to set
In standby loading experimental tank, foil gauge is connected into data wire, divide horizontal rut collection section, carry out mark；Determine seismic wave mould
Measuring point, carries out mark；Then the precompressed of 2~5min is carried out.
8. a kind of method of asphalt ultraviolet light and aging performance test according to claim 1, it is characterised in that institute
Stating microscopic test includes infrared spectrum, thermogravimetric analysis, gel chromatography.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356516A (en) * | 2017-06-12 | 2017-11-17 | 交通运输部公路科学研究所 | A kind of method of testing of asphalt with ultraviolet aging longitudinal direction depth |
| CN107576587A (en) * | 2017-08-23 | 2018-01-12 | 南京林业大学 | Based on the dynamic (dynamical) ageing of asphalt performance prediction method of isothermal analysis |
| CN108956433A (en) * | 2018-05-25 | 2018-12-07 | 中交第二公路勘察设计研究院有限公司 | The calculation method of the vertical diffusion depth of asphalt ultraviolet ageing |
| CN108956438A (en) * | 2018-07-23 | 2018-12-07 | 长安大学 | Ultraviolet radioactive-oxygen-temperature-humidity coupling ageing of asphalt experimental rig and method |
| CN109580413A (en) * | 2017-09-28 | 2019-04-05 | 宁海德宝立新材料有限公司 | A kind of infrared spectrum analysis of binary mixture and its application |
| CN110108865A (en) * | 2019-04-28 | 2019-08-09 | 河海大学 | A kind of mechanism of modification research method of used oil to asphalt material |
| CN111220533A (en) * | 2020-01-20 | 2020-06-02 | 长安大学 | Color analyzer for color asphalt under ultraviolet light aging |
| CN115032141A (en) * | 2022-08-11 | 2022-09-09 | 北京建筑大学 | Method for determining indoor ultraviolet aging parameters of asphalt by simulating alternation of day and night in natural environment |
| CN115479884A (en) * | 2022-09-01 | 2022-12-16 | 哈尔滨工业大学 | Test and evaluation method considering influence of freeze thawing and aging on asphalt mixture performance |
| CN116642806A (en) * | 2023-07-27 | 2023-08-25 | 北京建筑大学 | Method for testing diffusion behavior of substances in asphalt under ultraviolet condition |
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| CN105784575A (en) * | 2016-03-10 | 2016-07-20 | 同济大学 | Ultraviolet aging test method for asphalt material in tension state |
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| CN107356516A (en) * | 2017-06-12 | 2017-11-17 | 交通运输部公路科学研究所 | A kind of method of testing of asphalt with ultraviolet aging longitudinal direction depth |
| CN107576587A (en) * | 2017-08-23 | 2018-01-12 | 南京林业大学 | Based on the dynamic (dynamical) ageing of asphalt performance prediction method of isothermal analysis |
| CN109580413A (en) * | 2017-09-28 | 2019-04-05 | 宁海德宝立新材料有限公司 | A kind of infrared spectrum analysis of binary mixture and its application |
| CN108956433B (en) * | 2018-05-25 | 2021-03-09 | 中交第二公路勘察设计研究院有限公司 | Calculation method of ultraviolet aging vertical diffusion depth of asphalt mixture |
| CN108956433A (en) * | 2018-05-25 | 2018-12-07 | 中交第二公路勘察设计研究院有限公司 | The calculation method of the vertical diffusion depth of asphalt ultraviolet ageing |
| CN108956438A (en) * | 2018-07-23 | 2018-12-07 | 长安大学 | Ultraviolet radioactive-oxygen-temperature-humidity coupling ageing of asphalt experimental rig and method |
| CN108956438B (en) * | 2018-07-23 | 2020-12-15 | 长安大学 | Ultraviolet radiation-oxygen-temperature-humidity coupled asphalt aging test device and method |
| CN110108865A (en) * | 2019-04-28 | 2019-08-09 | 河海大学 | A kind of mechanism of modification research method of used oil to asphalt material |
| CN111220533A (en) * | 2020-01-20 | 2020-06-02 | 长安大学 | Color analyzer for color asphalt under ultraviolet light aging |
| CN115032141A (en) * | 2022-08-11 | 2022-09-09 | 北京建筑大学 | Method for determining indoor ultraviolet aging parameters of asphalt by simulating alternation of day and night in natural environment |
| CN115479884A (en) * | 2022-09-01 | 2022-12-16 | 哈尔滨工业大学 | Test and evaluation method considering influence of freeze thawing and aging on asphalt mixture performance |
| CN116642806A (en) * | 2023-07-27 | 2023-08-25 | 北京建筑大学 | Method for testing diffusion behavior of substances in asphalt under ultraviolet condition |
| CN116642806B (en) * | 2023-07-27 | 2023-10-13 | 北京建筑大学 | Method for testing diffusion behavior of substances in asphalt under ultraviolet condition |
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